Dissociative disorder

Disease Description (Causes and Symptoms)

• Definition: Conditions in which mental functions that should normally be integrated—such as consciousness, memory, identity, or perception of the environment (derealization·depersonalization)—become fragmented (the dissociative disorders group).
• Main causes and pathophysiology:
  • Commonly associated with very traumatic or repetitive psychological stress·trauma (especially sexual·physical abuse during childhood).
  • As a defense mechanism, the individual separates (dissociates) painful experiences so that they cannot be accessed by consciousness.
  • From a behaviorist perspective, dissociative responses may be reinforced by avoidance of anxiety.
• Main symptoms (summary by type):
  • Dissociative amnesia: Partial or general inability to recall personal·important information (from several hours to several years).
  • Dissociative fugue (dissociative flight, fugue): Unexpected movement to another location or behavior involving a new identity, together with a disruption of identity·memory.
  • Dissociative identity disorder (DID): Alternating control by different identities (“multiple personalities”), with discrepancies in memory between identities.
  • Depersonalization disorder (derealization/depersonalization): Symptoms in which oneself or the surroundings feel unfamiliar (derealization·depersonalization).
  • Associated symptoms: Anxiety, depression, sleep disorders, increased risk of self-harm·suicide, and impaired functioning (interpersonal·occupational).

Treatment Methods

• Summary of treatment principles:
  • First rule out underlying physical·neurological causes (such as brain lesions and seizures), then focus treatment on psychological therapy.
  • Treatment is individualized according to the symptom pattern (functional recovery·stabilization → trauma processing → integration and readaptation).
• Psychotherapy:
  • Stabilization and ensuring safety (emotional regulation, recovery of daily functioning, coping-skills education).
  • Trauma-focused treatment: Trauma-focused therapies (e.g., EMDR, trauma-focused CBT) can help improve symptoms.
  • Dissociative identity disorder (DID): A phased approach—(1) stabilization and self-harm prevention, (2) trauma processing, (3) identity integration/function improvement. Group therapy·individual therapy may be conducted together.
  • Psychodynamic therapy: May be applied to depersonalization·emotional problems.
  • Hypnosis: May be used to assist memory recovery, but must be performed with extreme caution (risk of inducing false positives·false memories).
• Pharmacological treatment:
  • There are no standard medications that directly treat dissociative symptoms themselves.
  • SSRIs/SNRIs, sleep medications, anti-anxiety medications, etc. may be used for accompanying depression·anxiety·sleep disorders.
  • If necessary, antipsychotics·anti-anxiety medications may be considered for a short period for psychotic symptoms or severe anxiety.
• Hospitalization·emergency intervention:
  • Hospital treatment and intensive observation are necessary in cases of self-harm·suicide risk, loss of functioning, or safety concerns.
• Precautions (during treatment·self-management):
  • Forced recall of memories may cause re-experiencing of trauma·worsening of symptoms, so it should be conducted under the guidance of a specialist.
  • Medication focuses on symptom relief and treatment of accompanying conditions; it is not a targeted treatment for dissociation itself.
  • Because anxiety·dissociation may increase due to re-exposure to trauma during treatment, a phased approach and a safety plan are essential.
• Risk of complications:
  • Self-harm·suicide, substance abuse, loss of social·occupational functioning, and the possibility of long-term disability due to chronic progression.

Outpatient Visit Checklist (Including Preparation Items and Example Questions)

• Recommended items to bring:
  • List of currently taken medications (name·dose·time of administration)
  • Copies of previous test results (brain MRI/CT, EEG, blood tests, etc.) and medical records (if available)
  • Symptom diary: Time of symptom onset·duration·triggers·behaviors (e.g., periods of memory loss, fugue episodes, appearance of another personality, etc.)
  • Information related to a history of psychological trauma (to the extent possible) and family history
  • Records of sleep·alcohol·drug use·stressful situations
• Useful notes for an outpatient visit:
  • Recent changes in symptoms (frequency·severity·impact on daily life)
  • Whether there are thoughts of self-harm·suicide and safety-related information
  • Availability of social support (family·friends) and need for care
• Show the medical staff during the visit:
  • Symptom diary, medication list, previous test results

Examples of General Questions to Ask the Doctor

• What are the side effects of this medication? (If taking medication, include the specific medication name.)
• What do you think is the cause of my symptoms? (Including whether physical causes have been ruled out.)
• What is the expected treatment duration, and what are the stages of treatment (stabilization → processing → integration)?
• What precautions or safety measures should I take in daily life (including what to do if there is a risk of self-harm)?
• What self-management measures (sleep, stress management, avoiding alcohol, etc.) should I follow to reduce the risk of relapse?

Examples of Disorder-Specific Questions

• In my case (or that of a family member), memory loss (or fugue) occurs repeatedly. How likely is it that these memories will be fully recovered? What methods can help with recovery?
• When multiple personalities (or different identities) appear, what are the standard treatment methods for integrating the personalities (or coordinating their coexistence), and what outcomes can be expected?

(When receiving medical care, presenting specific medical history·test results based on the questions above can help with establishing a diagnosis·treatment plan.)